I'm having problems with my 998SI 13 months old, good power at terminals (12/12.5) wired to battery.....what it's doing is it wont turn off just goes to the "shutting down" screen and sits there until the screen goes white. I'm pretty sure I joined the Humminbird Select program so I should have another year of warranty left but I had a question about the bootstrap way to get it out of the loop. Also the way I have to turn the unit off is to unplug it then plug it back in. The unit comes on without me using/pressing the power button so I think if a bad power button or board. Also anyone else see or heard of this happen?